<template>
    <div id="app">
        <div>
            <span>姓名:</span>
            <input type="text" v-model="name"/>
        </div>
        <div>
            <span>年龄:</span>
            <input type="number" v-model="age"/>
        </div>
        <div>
            <span>性别:</span>
            <select v-model="sex">
                <option value="男">男</option>
                <option value="女">女</option>
            </select>
        </div>
        <div>
            <button @click="addFn">添加/修改</button>
        </div>
        <div>
            <table border="1" cellpadding="10" cellspacing="0">
                <tr>
                    <th>序号</th>
                    <th>姓名</th>
                    <th>年龄</th>
                    <th>性别</th>
                    <th>操作</th>
                </tr>
                <tr v-for="(item,index) in list" :key="item.id">
                    <td>{{index+1}}</td>
                    <td>{{item.name}}</td>
                    <td>{{item.age}}</td>
                    <td>{{item.sex}}</td>
                    <td>
                        <button @click="del(item.id)">删除</button>
                        <button @click='change(item.id)'>编辑</button>
                    </td>
                </tr>
            </table>
        </div>
    </div>
</template>
<script>
export default {
    data() {
        return {
          flag:'',
          id:'',
          name:'',
          age:'',
          sex:'男',
            list: [
                {
                    id: 10,
                    name: 'xm',
                    age: 10,
                    sex: '男',
                },
                {
                    id: 11,
                    name: 'xh',
                    age: 11,
                    sex: '女',
                },
                {
                    id: 12,
                    name: 'xhua',
                    age: 12,
                    sex: '男',
                },
            ],
        }
    },
    methods:{
      addFn(){
      if (this.flag==='') {
        this.list.push({
                     id: +new Date(),
                    name:this.name,
                    age: this.age,
                    sex: this.sex,
        })
        this.name=''
        this.age=''
        this.sex=''
      }else{
           this.flag.name=this.name
           this.flag.age=this.age
           this.flag.sex=this.sex
      }
              this.name='',
              this.age='',
              this.sex=''
      
      },
      change(id){
    
       const obj= this.list.find(item=>item.id=id)
       const {age,name,sex} =obj
          
              this.name=name,
              this.age=age,
              this.sex=sex

              this.flag=obj
     

      },

      del(id){
       this.list= this.list.filter(item=>item.id !== id)
      }
    }
}
</script>
